sin
opp/hyp
cos
adj/hyp
tan
opp/adj
csc
(sin) hyp/opp
sec
(cos) hyp/adj
cot
(tan) adj/opp
converting degrees into radians ex 240
240/180
converting radians into degrees ex pie/18
1/18 x 180
cos
x
sin
y
tan
y/x or sin/cos
csc
1/y
sec
1/x
cot
x/y or cos/sin